Home / 134,829.40-186,101.58-78,259

Finding the Fourth Proportional to 134,829.40, 186,101.58 and 78,259

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Solution

The fourth proportional to 134,829.40, 186,101.58 and 78,259 is: 108,018.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,829.40 : 186,101.58 = 78,259 : x
  2. Step 2: Convert to fraction form
    134,829.40/186,101.58 = 78,259/x
  3. Step 3: Cross multiply
    134,829.40x = 186,101.58 × 78,259
  4. Step 4: Simplify right side
    134,829.40x = 14,564,123,549.22
  5. Step 5: Solve for x
    x = 14,564,123,549.22/134,829.40
  6. Step 6: Final answer
    x = 108,018.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.